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<![CDATA[PEMBERLAKUAN WORK FROM HOME (WFH) DAN DAMPAK EKONOMINYA BAGI PENGEMUDI OJEK ONLINE ]]>
<![CDATA[Edy Edy]]>;
<![CDATA[Uun Novalia Harahap]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[The Government of the Republic of Indonesia has established the COVID-19 pandemic as a National Disaster. The government requested that the community conduct social distancing in order to prevent the transmission of Corona Virus or COVID-19. Activities that are usually done outside the home, such as work, study and worship can be carried out inside the house (work from home). The application of social distancing (work from home) has an economic impact on people whose daily income is one of them being an online motorcycle taxi driver. From the research results obtained the application of social distancing (work from home) causes a decrease in online motorcycle taxi driver activity with a percentage ranging from -16.7% to -80.0% with an average value = -57.58%. The decline in activity caused a decrease in online motorcycle taxi driver acceptance with percentages ranging from -5.3% to -87.5% with an average value of -58.14%.]]>
<![CDATA[EVALUASI POSTUR KERJA PADA UMKM SEPATU DENGAN METODE REPAID ENTIRE BODY ASSESMENT ]]>
<![CDATA[Rini Halila Nasution]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[Current technological developments are so rapid, so that equipment has become a basic necessity on employment. This means that equipment and technology is an important support in an effort to increase productivity for the type of work. Work posture is the determining point in analyzing the effectiveness of a job. If the work posture carried out by the operator is good and ergonomic, it can be ascertained that the results obtained will be good too. This study aims to evaluate the posture of workers in MSME shoes, where workers are too bent and their legs are bent. Therefore, this study was made so that myaman workers while doing work and can increase the productivity of these MSMEs. Assessment of work posture in this study using the REBA method, the results of the assessment of the four work positions at level 2 with information needing action for that it is necessary to propose improvement of work posture by designing work facilities such as desks and chairs.]]>
<![CDATA[OPTIMASI KINERJA TURBIN PELTON RESPON KEMIRINGAN BUCKET DENGAN DIAMETER NOSEL MENGGUNAKAN SOFTWARE STATISTIKA ]]>
<![CDATA[Rizky Gunawan]]>;
<![CDATA[Junaidi Junaidi]]>;
<![CDATA[Fadly Kurniawan]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[Pelton turbine is a type of impulse turbine that converts all water energy into velocity energy before entering the turbine runner. The power generated in the water turbine (Pelton turbine) varies depending on the flow or flow of incoming water to turn the turbine.This research was conducted in the mechanical engineering laboratory of the Faculty of Mechanical Engineering, Universitas Harapan Medan. The experimental method is the method used in this study. Pelton Turbine performance optimization of bucket slope response and nozzle diameter using statistical software. Based on the results of the Pelton Turbine Testing Graph using the Taguchi method, the response of the bucket slope with the Maximum Rotation nozzle diameter, namely at -8º Bucket slope, produces a turbine rotation of 416.7 Rpm with a nozzle diameter of 19 mm. while with maximum power, the bucket tilt of 8º produces a turbine load of 405 watts with a diameter of 19 mm.]]>
<![CDATA[PENYELIDIKAN SIFAT MEKANIS BAHAN KOMPOSIT POLIMER DIPERKUAT SERAT BATANG PISANG KEPOK AKIBAT BEBAN IMPACT ]]>
<![CDATA[surya hadi]]>;
<![CDATA[ade irwan]]>;
<![CDATA[Fadly Ahmad]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[Banana stem fiber is a tipe of fiber with good strength and alternative material that can be used as a resforcing material in the manufacture of composit.the use of banana fiber as a composit material is an alternative in making scientific composit. The research aims to determine the effect of variation in the volume fraction of banana fiber on the strength of impact.]]>
<![CDATA[ANALISA UJI IMPAK BAJA CARBON STEEL 1045 DENGAN MENGGUNAKAN METODE CHARPY ]]>
<![CDATA[muhammad wahyu]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[Carbon steel 1045 is a material that is widely used for machine components. Due to its malleability and good machinability, and good heat resistance and ductility. The design and impact testing of charpy is a material analysis to determine the toughness or brittleness of the material against sudden loads. By heating the 1045 carbon steel material, using the hardening method using water media to determine the brittleness of carbon steel after being heated. The results obtained after testing were that the impact energy value obtained from specimen1 was greater with a value of 125.739 joules, while for specimen 2 (117.5603 joules) and specimen 3 (103.833 joules). The value of the impact value obtained by specimen 1 was greater with a value of 0.235 j/for specimen 1 while 0.213 j/for specimen 2 and 0.188 j/ for specimen 3. The lower the impact value obtained, the more resilient the fracture occurs in the specimen.]]>
<![CDATA[ANALISA POSTUR KERJA PADA BAGIAN PEMBOTOLAN LIMUN DENGAN METODE QUICK EXPOSURE CHECK ]]>
<![CDATA[hendra antony hutabarat]]>;
<![CDATA[eddy eddy]]>;
<![CDATA[nismah panjaitan]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[PT. PabrikEsSiantar is a factory that produces bottled drinks. As an industry which is also a labor-intensive industry where there are many manual material handling activities carried out by workers. The large number of manual material handling jobs is feared to cause musculoskeletal disorders (MSDs), namely complaints in the parts of the skeletal muscles that a person feels ranging from very mild complaints to very pain arising from awkward postures by the body when working. This research method uses the Quick Exposure Check method, which is the assessment by combining the assessment from the perspective of the researcher based on the observed posture of the worker and based on the assessment by the worker. Then recapitulate the questionnaire data in the QEC score sheet and determine the value of the exposure score, the score obtained is 45 - 53 with an exposure percentage of 50 - 58%, so further research and changes are needed. The proposed work posture improvement design is suggested to pay attention to risk factors, especially the back so as not to bend over]]>
<![CDATA[SIMULASI PENGONTROLAN DAN MONITORING ALIRAN MINYAK DENGAN MENGUBAH KECEPATAN POMPA ]]>
<![CDATA[Indra Roza]]>;
<![CDATA[Teguh Vikriandi Tarigan]]>;
<![CDATA[Ervin Panggabean]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[With the development of technology, then every industry is eager to make tools that can help employees and industrial management, one of which is a tool in the field of control. In the world of palm oil industry, oil control is needed to control the flow of oil to the plant. With automatic oil control, the oil flow rate to the plant can be controlled according to the needs of the plant. Currently there are still many palm oil industries that have not controlled the oil flow pump automatically. Although the industry includes a large industry, it still uses manual control. Then comes the idea to design the pump control automatically by using PLC. Here the test by raising and lowering the frequency for motor pump speed can change. From the test results that have dilakuakan can be concluded that a pump that is given a frequency greater than the frequency given by PLN, then the pump speed will increase according to the given by the PLN, then the pump speed will decrease according to the frequency given by the inverter. But if the pump is given a frequency smaller than the frequency frequency given by the inverter. In the simulation of controlling and monitoring the flow of oil by changing the speed of the pump can be applied in the industry, because the control in this way is very simple and can be applied in the palm oil industry]]>
<![CDATA[ANALISA PERBANDINGAN EFESIENSI PENGGUNAAN ENERGI LISTRIK ANTARA SUPPLAI LISTRIK PLN DAN GENSET DI RSU MUHAMMADIYAH SUMATERA UTARA ]]>
<![CDATA[Indra Roza]]>;
<![CDATA[Agus Almi]]>;
<![CDATA[Anas Dary Arinto]]>;
<![CDATA[Pratowo Aji]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[Energy distribution of electricity to consumers are sometimes susceptible to interference, both internal and external threats. Due to a disturbance sometimes consumers feel particularly aggrieved General Hospital because it can disrupt the operational process including Muhammadiyah General Hospital. Therefore, a lot of the General Hospital that use generators as a backup energy when there is a sudden interruption of PLN. However, for the operation of the generator and energy costs are not small. This study aims to determine how much energy use efficiency ratio of the electric generator to the electricity energy in terms of technical and economical at the General Hospital in the North Sumatra Muhammadiyah Mandala By Pass Medan. Given the comparative assessment, expected General Hospital, North Sumatra Muhammadiyah can make efficient use of electrical energy so as to reduce financing for the electricity.]]>
<![CDATA[ANALISIS PENERAPAN PROGRAM KESELAMATAN KERJA DALAM USAHA MENINGKATKAN PRODUKTIVITAS KERJA DENGAN PENDEKATAN FAULT TREE ANALYSIS DAN HAZARD AND OPERABILITY STUDY ]]>
<![CDATA[Yetti Meuthia Hasibuan]]>;
<![CDATA[Rini Halila Nasution]]>;
<![CDATA[Uun Novalia Harahap]]>;
<![CDATA[Rafika Apriani Pratiwi]]>;
<![CDATA[Wan Krisman Hia]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[PT. Sumatra Hakarindo in its operation is not free from problems encountered such as work accidents, occupational diseases and the negative impact of the industry on the surrounding environment, so the level of human work safety as a factor of production is needed so that optimal productivity can be achieved. The application of work safety programs for workers is an important supporting effort in production activities. The work safety program system consists of several program elements and their supporters. In this study the measurement of the results of work safety efforts and the safe T value, the frequency level to express the number of accidents that occur every 1,000,000 hours worked from the employee's "work hours" home. The safe T value is a measurement that aims to compare the results of the accident reduction rate achieved for that work. From the implementation of the Occupational Health program at PT. Sumatra Hakarindo can be said to have been implemented quite well. Accidents that occurred in 2018 -2020 were 15,13,11 accidents. With a frequency rate from 2018-2020 it is 64.6; 49.9; 36,1. The severity level that occurred in 2016-2018 was 458.9; 284.2; 233,2. With a safe T value in 2018 it is known - 950.2 in 2019 it is - 1098.2. The decrease in accident rates and the severity of accidents from year to year will increase labor productivity.]]>
<![CDATA[Perbaikan Nilai CBR Tanah Lempung Lunak Dengan Stabilitas Dua Tahap dengan Menggunakan Abu Vulkanik ]]>
<![CDATA[Yusrizal Lubis]]>;
<![CDATA[Diana Suita]]>
<![CDATA[ Jurnal Simetri Rekayasa Vol 2 No 1 (2020): Article April 2020 ]]>
Publisher : <![CDATA[Universitas Harapan Medan ]]>
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<![CDATA[Soil with unfavorable characteristics often creates new problems, one of which is soft clay. Therefore, a soil improvement method is needed to change the characteristics of the soil. Two-stage stabilization using bukho rock ash and volcanic ash has the potential to overcome this problem. Based on the results of the study, the optimum CBR value was 9.245% from two-stage stabilization of soft clay soils with 12% bukho rock ash and 4% volcanic ash added. The addition of 6% bukho rock ash and 4% volcanic ash obtained 100% soil density. The addition of 9% bukho rock ash and 4% volcanic ash obtained 100% soil density. The addition of 12% bukho rock ash and 4% volcanic ash obtained 100% soil density. This shows that the effect of two-stage stabilization based on percentage variations can increase soil density.]]>
